Looks like they offer a 30 day grantee on their products. If the 30 days isn't up. Contact them immediately to file a claim.
I have not dealt with this model of e-cig. Took a quick look at the the atomizers and looks like a...306? I'm not to sure so someone else will have to chime in. Perhaps you should start a new thread about your concerns.
Is the atomizer giving you a hissing sound, heat, glowing red? If yes, then the atomizer is still working and perhaps more juice needs to be added. Or you may have clogged it or you might have to clean them. If no sound, heat, or red glow...then the atomizer is dead and nothing can be done.
Are you just using the prefilled cartridges? If yes, then the cartridges are empty and you have to order more.
Not sure what "drained them" means.